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9 terms

chp 3 vocab

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parallel lines
two lines that are coplanar and do not intersect
skew lines
lines that do not intersect and are not coplanar
parallel planes
two planes that do not intersect
transversal
a line that intersects two or more coplanar lines at different points
corresponding angles
two angles that are formed by two lines and a transversal and occupy corresponding positions
alternate interior angles
2 angles that are formed by 2 lines and a transversal and that lie between the 2 lines on opposite sides of the transversal
alternate exterior angles
2 angles that are formed by 2 lines and a transversal and that lie outside the 2 lines on opposite sides of the transversal
consecutive interior angles
2 angles that are formed by 2 lines and a transversal and that lie between the 2 lines on the same side of the transversal
flow proof
a type of proof that uses arrows to show flow of a logical argument statements are connected by arrows to show how each statement comes before it. and each reason is written below the statement it justifies